|Pos|Rider|Manufacturer|Time/Retired|Points|
|---|---|---|---|---|
|1|Max Biaggi|Aprilia|40:36.299|25|
|2|Marcellino Lucchi|Aprilia|+6.914|20|
|3|Ralf Waldmann|Honda|+18.294|16|
|4|Olivier Jacque|Honda|+18.607|13|
|5|Jürgen Fuchs|Honda|+31.617|11|
|6|Tetsuya Harada|Yamaha|+31.649|10|
|7|Jean-Philippe Ruggia|Honda|+31.683|9|
|8|Nobuatsu Aoki|Honda|+47.701|8|
|9|Luis d'Antin|Honda|+51.186|7|
|10|Cristiano Migliorati|Honda|+51.556|6|
|11|Massimo Ottobre|Aprilia|+51.563|5|
|12|Eskil Suter|Aprilia|+51.613|4|
|13|Luca Boscoscuro|Aprilia|+51.617|3|
|14|Regis Laconi|Honda|+52.394|2|
|15|Jurgen vd Goorbergh|Honda|+52.569|1|
|16|Sebastian Porto|Aprilia|+1:03.619||
|17|Jamie Robinson|Aprilia|+1:06.917||
|18|Olivier Petrucciani|Aprilia|+1:06.945||
|19|Alessandro Antonello|Aprilia|+1:07.099||
|20|Osamu Miyazaki|Aprilia|+1:32.873||
|21|Davide Bulega|Aprilia|+1:32.902||
|22|Yasumasa Hatakeyama|Honda|+1:34.039||
|23|Franco Battaini|Aprilia|+1:34.363||
|24|Sete Gibernau|Honda|+1:34.931||
|25|Christian Boudinot|Aprilia|+1:41.263||
|26|José Barresi|Yamaha|+1 Lap||
|27|Roberto Rolfo|Aprilia|+1 Lap||
|28|Cristophe Cogan|Honda|+1 Lap||
|Ret|Gianluigi Scalvini|Honda|Retirement||
|Ret|Roberto Locatelli|Aprilia|Retirement||
|Ret|Takeshi Tsujimura|Honda|Retirement||

Question: what is the total number of japanese riders in the top 20?
Answer: 3